Bump koa-mount from 2.0.0 to 4.0.0

Bumps [koa-mount](https://github.com/koajs/mount) from 2.0.0 to 4.0.0.
- [Release notes](https://github.com/koajs/mount/releases)
- [Changelog](https://github.com/koajs/mount/blob/master/History.md)
- [Commits](koajs/mount@2.0.0...4.0.0)

---
updated-dependencies:
- dependency-name: koa-mount
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -42,7 +42,7 @@
     "koa": "^2.5.1",
     "koa-body": "^2.0.0",
     "koa-logger": "^2.0.0",
-    "koa-mount": "^2.0.0",
+    "koa-mount": "^4.0.0",
     "koa-router": "^7.4.0",
     "koa-simple-healthcheck": "^0.0.1",
     "koa-validate": "^1.0.7",

yarn.lock

@@ -1011,21 +1011,14 @@ dateformat@~3.0.3:
   resolved "https://registry.yarnpkg.com/dateformat/-/dateformat-3.0.3.tgz#a6e37499a4d9a9cf85ef5872044d62901c9889ae"
   integrity sha512-jyCETtSl3VMZMWeRo7iY1FL19ges1t55hMo5yaam4Jrsm5EPL89UQkoQRyiI+Yf4k8r2ZpdngkV8hr1lIdjb3Q==
 
-debug@*, debug@^4.1.0, debug@^4.1.1:
-  version "4.3.2"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.2.tgz#f0a49c18ac8779e31d4a0c6029dfb76873c7428b"
-  integrity sha512-mOp8wKcvj7XxC78zLgw/ZA+6TSgkoE2C/ienthhRD298T7UNwAg9diBpLRxC0mOezLl4B0xV7M0cCO6P/O0Xhw==
-  dependencies:
-    ms "2.1.2"
-
 [email protected], debug@~3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
   integrity sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==
   dependencies:
     ms "2.0.0"
 
-[email protected], debug@^4.3.4:
+[email protected], debug@^4.0.1, debug@^4.1.0, debug@^4.1.1, debug@^4.3.2, debug@^4.3.4:
   version "4.3.4"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.4.tgz#1319f6579357f2338d3337d2cdd4914bb5dcc865"
   integrity sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==
@@ -1039,27 +1032,13 @@ debug@^2.6.9:
   dependencies:
     ms "2.0.0"
 
-debug@^3.1.0:
-  version "3.2.6"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
-  integrity sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==
-  dependencies:
-    ms "^2.1.1"
-
-debug@^3.2.7:
+debug@^3.1.0, debug@^3.2.7:
   version "3.2.7"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.7.tgz#72580b7e9145fb39b6676f9c5e5fb100b934179a"
   integrity sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==
   dependencies:
     ms "^2.1.1"
 
-debug@^4.3.2:
-  version "4.3.3"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.3.tgz#04266e0b70a98d4462e6e288e38259213332b664"
-  integrity sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==
-  dependencies:
-    ms "2.1.2"
-
 decamelize@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
@@ -2713,13 +2692,13 @@ koa-logger@^2.0.0:
     humanize-number "0.0.2"
     passthrough-counter "^1.0.0"
 
-koa-mount@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/koa-mount/-/koa-mount-2.0.0.tgz#728b7d01ab23e7e58dc588e52fc554d67ee981db"
-  integrity sha1-cot9Aasj5+WNxYjlL8VU1n7pgds=
+koa-mount@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/koa-mount/-/koa-mount-4.0.0.tgz#e0265e58198e1a14ef889514c607254ff386329c"
+  integrity sha512-rm71jaA/P+6HeCpoRhmCv8KVBIi0tfGuO/dMKicbQnQW/YJntJ6MnnspkodoA4QstMVEZArsCphmd0bJEtoMjQ==
   dependencies:
-    debug "*"
-    koa-compose "^3.0.0"
+    debug "^4.0.1"
+    koa-compose "^4.1.0"
 
 koa-router@^7.4.0:
   version "7.4.0"